Extreme Engineering Solutions (X-ES) introduces the XCalibur4440, a conduction- or air-cooled 6U VPX Single Board Computer (SBC) supporting 2nd and 3rd generation Intel Core i7 processors. With a dual- or quad-core processor, 16 GB of memory, and dual PMC/XMC sites, the XCalibur4440 is well-suited for the most demanding military applications.